Fuel-supply system.



M. M. WOOD.

FUEL SUPPLY SYSTEM. APPLIOATIOH rum; AUG.19, 1907.

Patentsd Ems 15, 2909 E) N I m 0P N w & 2S

M'ii" n Ming s i 1 W IHI Witnesses; Inventor,

M'ontravllle MNVpod,

35 tus.

.unrrnn snares PATENT or IcE.

uoNTnAviLLE M. woon, or Beams, ILLINOIS, ASSIGNOR TO GENERAL uLEcTnicCOMPANY, ACORPORATION or NEW YORK. r I

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No. ceases.

To all whom it ma'y'comiem:

Be it known that i, Mournavrrrn M. Woon, a citizen of the United States,residing at Berwyn, county of Cook, State of illinois, have inventedcertain new and useful 1m rovernents in kiwi-Supply Systems, oi whichthe following is a specification.

The present invention relates to systems of fuel supply, and has for itsobject to 0 prove their construction and operation. in the accompanyingdrawing, 1 have isifiown in a moreor less diagrammatic man as: {myinvention as applied to an automobiiei i I 1 indicates the main fueltank, which may be located at any suitable point on the vehicle, and issub ected to atmospheric pressure only.

2 indicates the auxiiiary fuel tank containing fuel and air underpressure considerably greater than that of the tank 1. In some cases theair pressure in the tank is as high as eighty pounds or it may be muchlower depending upon the requirements. This pressure will de end uponWhat kind of a evice receives uel from the system. For the purpose ofillustration the high-pressure tank has been made on a fairly largescale as compared to the low-pressure tank. In

J practice the low-pressure tank is. very much arger than thehigh-pressure tank. The

object of this is to have as small an amou t.

of'fuel under high pressure as is consistent with the successiuloperation of the appara- 3 indicatee'a pump having the usual lunger 4:and a suction valve 5 and disc arge valve e. The pump is driven by aneccentrio 7 or other means from the engine 8 or other source of power.The discharge side of the pump in the present embodiment of theinvention is connected to a burner nozzle 9 and to the bottom of thehigh-pressure fuel tank. By reason of this arrangement the pressure inthe tank 2 is always the same as that on the burner and either the umpor the tank can feed it. In order to suiije'ct the tank 2 to airpressure a pipe 10 is provided containing a s was valve 1].. The pipe 10can be supplied with pressure from a hand pump or from a power ump orother source as desired. Between t e body of air in the tank and thebody of fuel is or may be a layer of thick hea oil or other separator toprevent theair auc fuel from mixing.

Patented June 15, 1909.

Application filed August 19, 1907. Serial No. 389,32s.

The burneris employed to heat a coilboiler 12 contained n a suitablecasing 13 v ilownwardly-extending line 18. and assists in creating aforced draft on the burner.

ing means: Secured to the lower end of the pump is a casing 19containing a diaphragm 20 at the lower end. under certain conditions ona stem 21 in a manner to raise the ball suction Valve 5 from its seatthus relieving the pum of its load and checking the delivery of fue tothe presses the stem and diaphragm, down to permit the suction valve toseat/ Extending from the upper end of the tank 2 to the under side ofthe diaphragm is a pipe 23 that conveys air at th pressure of the tank.When this pressure is great enough to overcome the spring 22, thediaphragm raises the suction valve. from its seat andthe fuel pumpplunger moves idly toand fro, the only load friction, which isnegligible. By connecting the pipe 23 to the upper end of the tank 2 Imake'use of the air, as distinguished from the fuel, for operating thediaphragm regulator, and in so doing obviate the dangers incident toleakage and fire in case gasolene' is the fuel employed.

The particular invention hasbeen constructed and used in connection withgasolene fuel on anautomobile, but any other fuel can be used ifdesired. Instead of using the system for pumping fuel to a burner, I mayuse it to pump fuel to a carburetor or to large furnaces or otherapparatus requiring li uidfuel.

n accordance with'the-provisions of'the patent statutes, I havedescribed the princi ple of operation of my invention,'together with theapparatus which I nowoonsider to represent t e best embodiment thereof;but

I desire to have it understood that the appa- The fuel pump is regulatedby the follow This diaphragm acts having proper fines for carrying oflthe prodburnen. A compression spring "i normally on the driving meansbeing that due to the ratus is only illustrative and that the inventioncan be carried out 'by other means.

What I claim as new and desire to secure by Letters Patent f the UnitedStates, is',

1. In a system offuel sup ly, the combination of a low-pressure fuetank, a highpressure fuel tank, a pump havingsuction and dischargemembers and receiving fuel containing fuel and air under high pressure,

a fuel-consuming device connected to the high-pressure tank, a pumpreceiving fuel from the low-pressure tank and delivering it to thehigh-pressure tank, suction and discharge valves for the pump, and aregulator sensitive to changes in pressure on the highpressure side ofthe pump for rendering the suction valve inoperative.

3. In a system of fuel sup nation of a low-pressure fue tank, a tankcontaining fuel and air under high pressure,

ly, the combia fuel-consumingieviee connected to the high-pressure tank,a pump receiving fuel from the low pressure tank and delivering it tothe high-pressure tank and the device, suction and discharge valves forthe pump, and a regulator sensitive to changesin pressure on thehigh-pressure side" of the pump for rendering the suction valveinoperative.

.4. In a system of fuel sup ly, the combiload under certain conditions,which is acted 50 upon by the air from the high-pressure tank and aconduit leadin from the air space ofthe high-pressure tan to saidregulator.

In witness whereof, I have hereunto set my hand this fifteenth day ofAugust, 1907.

MONTRAVILLE M. WOOD. Witnesses:

Jo's. H. THRO, M. H. NICKELSON.

nation of a low-pressure fue' tank, a tank.

